Improvement in grifpers and gauges for printing-presses



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Letters Patent No. 99,749, dated February 15, 1870.

IMPROVEMENT IN GRIPPERS AND GAUGES '.EOR PRINTING-PRESSES.

The Schedule referred to in these Lettera Patent and making part of thesame.

.To whom it may concern:

Be it known that I, HENRY BARTH, ot' Cincinnati, Hamilton county, Ohio,have invented a new and useful Improvement in Friskets; and I herebydeclare the follo\\"ingl to be a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, making partof this specitication.

My invention relates to an appendage to a ii'isket, which, ou theelevation 'of the clamps, serves asa gauge to enable the attendant oftheprinting or other 'press 'fo-place the blank or sheet of paper.accurately upon the platen, and which permits of the proper closure ofthe ii-isket, as well as ot itsA adjustment for blanks of diversedimensions, when required.

Figure 1 is a perspective view of a platen and frisliet embodying mylinvention, the clamp being raised.

Figures 2 and 3 are vertical sections in the linea: x, representing theopen andv closed positions of the frisket.

Figure 4 represents the-lower edge of the platen.

`Projecting from the rear side of the platen A are two lugs, B C, havinggrooves, l) c, forA the tongued ends of a sliding head, D, .whichcarries two short stroke frisket-jaws or clips,` E and F, for the footand further side ot' the paper. These clips are secured'to the head D bythe bolts G, which occupy aslot, d, in the head, which, when sndicientlyslackened, can be adjusted for dilferent lengths of paper.

rlhe clip E also has a slot, e, to enable its adjustmeut forward orbackward, for diierent widths of paper.

Each clip has on its under side, parallel with its edge, a groove, tocontain a spring, H, or its equivalent, which at all times presses thetop of the platen, so as, in the elevated condition of the clips, toserve as stops or gauges for the edges of the paper, and so as, in theclosed condition ofthe clips, to be compressed wholly within itsrespective groove, so as not to interfere with the effective grip oftheclips.

The lugs B C ai'ord journal bearing for a shaft, I, having cams J J',which, on a partial rotation of the A plate spring, M, may serve todepress the head D when relieved from the action-oi' the, cams.

In the `most complete forni of my improvement, I

-provide a linger, or fingers, N, upon either the rear end ot' theshaft, as represented, or upon any other portion lie/st adapted to thework-in hand, which finger, at each elevation of the short-stroke clips,is, by the accompanying partial rotation of the shaft, asalready'explained, opened sutlicieutl f wide to admit of the easyremoval ofthe printed and theideposit-ion of the blank sheet.

I have described the preferred form of my improvement, but may vary thesame in non-essential particulars, or to suit particular' cases; forexample, the

. gauge-pieces may consist of bars or strips, yconfined by guide-pins,links, slots, or other-device, and held in contact with the platen ortympan either by gravitation simply, or by springs, (see diagrams X YZ,) and may be unaccompanied hy the wide opening-finger N.

Oneor more wide opening-tingers may be used in combination with one ormore short-strobe i'riskets, unprovided with the described gauge-pieces.

I claim herein as new, and ot' my invention- 1. The spring guides orgauges H, or their equivalents, attached to the clamps, so as tg headjusted therewith, substantially as set forth, for the purposes stated.

2. The wide opening paper-clamp or |1ger.N,n combination with theshort-stroke friskets E, arranged to operate substantially as and forthe purposes set forth.

hand.

HENRY BARTH.

Witnesses:

GEO. H. KNIGHT, JAMES H. LAYMAN.

In testimony of which invention, I hereunto setmy V

